the board member tells us that tamerlan tsarnaev did come back to the mosque after that. he was often there for dawn prayers between 5:00 and 5:15 a.m. usually on fridays. when i asked about the younger brother, dzhokhar tsarnaev coming to the mosque, this board member says yes, he did, usually not alone. always with his brother. anderson. >> did they shed any light on, you know, questions about radicalization about where he may have -- or when he may have become more radicalized? >> you know, we didn't get quite that far. i'm meeting with some people at the mosque later today and we hope to drill down on that. the uncle has said that there was some other person that may have swayed the older brother toward more radicalization. this is a little bit sketchy information at this point on who or what might have done that. and we're trying to put the pieces together with information regarding that and of course regarding his trip back to dagestan in 2012 when he spent six months there. and trying to piece together whether that may have had some influence on him and whether it